Presents a file upload item.
 
 className - (string) the user-defined css class for item
 
 inputHeight - (integer or auto) the height of input. The default value is auto. Some browsers don't support custom height for items, that's why we recommend don't use the attribute at all
 
 inputLeft - (integer) sets the left absolute offset of input.Just position:“absolute” makes sense of the attribute
 
 inputTop - (integer) sets the top absolute offset of input. Just position:“absolute” makes sense of the attribute
 
 inputWidth - (integer or auto) the width of input. The default value is auto. Some browsers don't support custom width for items, that's why we recommend don't use the attribute at all
 
 label - (string) the text label of item
 
 labelAlign - (left, right or center) the alignment of label within the defined width
 
 labelHeight - (integer or auto) the height of label. The default value is auto
 
 labelLeft - (integer) sets the left absolute offset of label. Just position:“absolute” makes sense of the attribute
 
 labelTop - (integer) sets the top absolute offset of label. Just position:“absolute” makes sense of the attribute
 
 labelWidth - (integer or auto) the width of label. The default value is auto
 
 name - (string) the identification name. Used for referring to item
 
 offsetLeft - (integer) sets the left relative offset of item (both input and label)
 
 offsetTop - (integer) sets the top relative offset of item (both input and label)
 
 position - (label-left, label-right, label-top or absolute) defines the position of label relative to input
 
 style - (string) specifies css style of item
 
var formData = [
		{type: "file", name: "caret", label: "Preview", position:"label-top"},
		{type: "file", name: "caret", label: "Full-size image", position:"label-top"}
];